Road-machine.



ROAD MACHINE. APPLICATioN FILED OCT. 22, 1917. l

" Pam-116111111111 11,1919.

burra JAMES B. JARMIN, 0F SPOKANE, WASHINGTON.

ROAD-MACHINE Specification of Letters Patent.

latented Mar. 11, 1919.

Application led October 221917. Serial No. 197,875.

To all 'whom it may concern: Be it known that I, JAMES B; JARMIN, a citizen of the United States, residing at Spokane, in the county otSpoliane and State or' Vashingt-on, have invented certain new and useful Improvements in Road- Machines, orf which the following is a speciiication.

The present invention relates to improvements in road machines under the broad class of wheeled Scrapers and is designed particularly for use in grading, leveling, and scraping, and otherwise fixing and repairing roads and highways. l.

The primary object of the invention 'is the provision of an implement of this charn 'actor which is simple in constrirtion and economical in operation, and is durable, and reliable 1n performing the functions for which itis intended.

The invention consists in certain novelties of construction and combinations of parts as will` be hereinafter more fully described and claimed.

' In the accompanying drawimts I have illustrated one complete example of the physical embodiment of my inventioin'c'onstrut-ted according to the best mode I have so far devised for the practical application of the principles of my invention. The implement as depicted and described herein ,has been successfully and satisfactorily op erated in actual use.

In the drawings: Figure 1 is a perspective View of an implenient built according to and embodying the novel features of my invention.

Fig. 2- is a side elevation of the gradingl or scraper blades with their connections.

Fig. 3 is a top plan view or the parts shown in Fig. 2. e

Fig. 4 is an enlarged detail view showing one of the swiveled clevises for the scraper blades.

Fig. 5 is a detail view showing the connection at the center of the implement, between the blade tilting bar and one of the transverse bars 'of' the suspending frame for the Scrapers.

Fig. 6 is a detail view showing the operating lever and connections for tiltingv the scraper blades and showing also its pivotal connection with the blades.

Fig. 7 is a view of the parts in Fig. 6 as seen lfrom the left in Fig. 6. a

Fig. 8 is a detail edge View of the: drat attachment for the scraper blades, and Fig. 9 is a top plan view of the parts in Fig. 8'

In the preferred embodiment of the invention as illustrated in the drawings, I have illustrated a comparatively long metallie frame 1, of channel irons, and supported on the two wheels 2 2 forming a front adjustable truck, and the wheels 3 3 forming the rear truck of the implement. The machine may be drawn by attaching lhorses to the clevis +L on the front truck,

and the rear axle is arched, or made in the shape of a crank axle 5 for the wheels 3,8, and is journaled in the frame 1 so that the frame may be elevated or depressed ateither or both sides ci' the machine by utilization oi the respect-ive levers G and 7. By employing these levers the frame maybe moved s0 that the operating parts of the implement are entirely free of the ground, or they may be adjusted to desired position for use, as readily understood.

The driver Or operator may occupy the seat 8 on the platform 9 at the rear of the frame l, and it will be apparent that the driver has free access to the conveniently located operating levers of the implement.

Below each of the two parallel longitudinal side bars or' the main frame, and forward or the rear wheels, is iXed a strut as 10 and 11, each lying below and in a plane parallel with its trarne bar, and spaced therefrom as shown. These struts, together with a pair of transverse angle iron bars 1'?. 12 bolted thereto, and the transverse inclined braces 10 'll' extending from the side bars of the main frame to the transverse bars, form a sus ending frame for the scraper frame and its Scrapers or blades. The free ends of the parallel bars l2 12 as seen in the drawings project beyond the ployed, one at' each side of the frame, and I these bars are fastened securely to the longitudinal bars 19 and.l 20 of the scraper fra-me.

itis

seen that the blade `10 on the stem as a pi vot. The end of the arch In Fig. 4.one of the four pivotal joints for the scraper blades is illustrated, and as all tt'our joints are alike, a description of one will suiicc for all, The blade and arched bar, in each case, are coupled together by a swiveled clevis 2l having a stem passing through a perforation in the angle bar which reinforces the blade, and it will be readll y may bc swiveled orswung bar is perforated, transversely and has a pin passed through the perforation 'and through the perforated ears of the clevis, a cotter pin 24 being employed to retain the pivot pin against loss by displacement. Thus it will be seen thatthe scraper blade, by its pivotal connection through the perforated clcvisand perforated arch bar, may be tilted with its loweredge toward the front t0 more readily shear oli' the surface of. the ground, and when the blade is tilted with its lower edge `to the rear it is i'n position to act in the nature of a drag to ride over and level or smooth ofi' the loose material.A

In addition to their adjustment with relation to the perpendicular, the blades may be adiusted horizontally, at different angles te the longitudinal axis olt the implement, or oblifju'e to the direction or' travel ot' the machine, on their swivel stems, and held in adjusted position by the/following devices, For this purpose the anglel irons l) and 2() are connectcdat their forward ends by the flat metal draw bar 25, arranged transversely of the implement and pivoted at 26 26 to the ends of these longitudinal bars lf) and 20. A chain 27 is attached near lhc ends of the draw bar, and the links ot the chain are passed through an` eye 28 ol' the large loop or ring-.25), and the ring Q9 is caught over the hook il() which hook. is al tached between the converging front ends ot the side bars of the main -t'rame l. When it is designed to adjust the blades obliquely, as in position in Fig. z, the chain 27 is slipped through the eye 2H, until the proper degree of angularity is reached, and then the link or" the chain which is lying fiati in the has at its-sides a links, as in Figs. links prevent pair of vertically disposed 8 and i), so that thesc'side displacement of the flat link with consequent displacement ot' the scrapers, by holdingthe tlat link locked in the loop. When the blades, and their supporting frame, are adjusted obliquel y, the frame is slidably supported on the two transverse bars 12 12 by means ot' the two slide rods 31 which are attached to, spaced above, and parallel with, the two longitudiiial frame ybars 19 and 2() of the scraper blade irame.

In Figs. 1 and 2 it will be apparent that the two transverse bars 12 12 project through the space between the longitudinal rods and longitudinal bars, which latter ineffect form loop,

-and 7. Thus the link is rotatably supported in the'angle iron bar 16- on the rear scraper blade, which is perforated to receive the shank, and a cotter pin 34 in the shank prevents withdrawal of the shank. An additional su )port for the stem is provided by the erflorated bracket bolted or riveted to t c angle bar, and this bracket is further supported by a U-bolt 36 passed through the scraper blade 14. The lever has a toothed segmental rack 37 and pawl-38 as usual, thejrack being fixed on a central, longitudinal link in the form of an .angle bar 39 provided with curved end extension 4() whichis perforated and pivoted between the periorated ears of the swiveled clevis 42 whose stem 43 is swlveled 1n a perforation in the angle iron bar 16 or' the rear scraper'blade. At its forward end this link has a pair of outwardly extending pivoted rods 44, 44, that are also pivoted at their outer ends 45 to the main frame of the im- I plement.

The forward blade may be tilted in unison with the rear bladc'by employment of the extensible operating bar 46 which is pivoted at 47 vto the operating lever, and through pivotal connection at 48 with the arm 49 fixed on the front blade, so that the two blades are tilted in unison. By means of the extensible operating bar 46 which has overlapping, perforated adjoining ends so that the length of the har may be varied and the bar held in adjusted position by means of bolts 5d 50, oneI bar may be tilted more than the other, if desired, will be understood.

The central longitudinal link is instrumental in holding the scraper frame mem.

in the same path. To accomplish this endA the rear transverse suspending barl2 is provided with a depending, bifurcated/bracket 51, midway its length and this bracket straddles the link 39, as best seen in Figs. 5 and 6 freely suspended at the front by its side rods 44 44 and is pivoted and swiveled at its rear end to the rear blade, and is held in a straight longitudinal line by the bifurcated bracket o'n the transverse bar 12 and the rods 44 44. The central longitudlnal link thus insures a forward travel of the Scrapers in the identical same path, regardless of the angle at which the scraper `blades have been adujsbed. While the messo? scraper blades and frame are i y movable in a hor'montal plane .'lor :,vnsting the Scrapers obliquel to t e tra vel of the inachine, it will readily be apparent that 'vertical movement of the scrapers and their frame is prevented by the interposition of the transverse suspending bars l2 between the longitudinal side bars and the longitw dinal rods of the scraper frame. rhus. when moving over a hollow place the blades cannot fall therein, but will permit the soil to fall and Will then level it ofi' as the blade passes over the surface, and when passing over irregular' high places and bumps, the entire weight of the implement holds the scraper blades to their Work and causes them lo scrape ofi excess material. The altitude or' the blades, as before stated is governed by the twolevers 6 and 7, and it will' readily be seen that when it is desired to tilt the inachine and blades horizontally as for instance for the purpose of depositing dirt in the center of the road, or before it passes over the v ends oi the blades, by proper .manipulation of these levers the reoluired side of the blades mav be lifted.

-lthough the implement illustrated proven'highly successful in actual practice, it will be understood that l contemplate additions, and alterations in the construction and operation of the machine, Within the scope ot my claims, without departing from the spirit olf my invention.

What l claim is:-

l. The eon'ibination in a wheeled scraper with its main frame including fixed laterally proliecting transverse bars, of a longitudinallyislidahle scraper frame including longitudinal bars below the projecting transverse bars and longitudinal rods above the transverse bars, Scrapers supported 'from the lon-' gitudinal bars, a draft bar connecting the longitudinal bars, and an adjustable draft ,with its main frame including fixed transverse bars, of a longitudinally slidable scraper frame including longitudinal bars below the transverse bars and supporting .rods above the transverse bars, arched bars attached to said longitudinal bars, scraper blades tiltably supported from said arched bars and means for tilting the blades, a draft bar pivotally connecting the longitudinal bars, and an adjustable draft med1um con nectlnn the draft bar with the main frame.

d. '".lne combination with a scraper frame incl nig a pair of arched lon 'tu inal bars, of arc o' obliquely adgusta le, transverse each having vertical and horizontal pivot supports from said bars, and means for tilting said scrapers on 'and holding them in adjusted position.

The combination with a scraper franie including a pair of arched longitudinal bars, of a pair of transver scraper blades, la clevis pivot/ed. har, stems on the clevises swiveled in pairs in said Scrapers, means for tilting the scraper blade, and means for adjusting the blades on their swiveled connections.

ln testimony whereof l ax .my signature.

' ,ranas s. Jeanna.

their horizontal axis i att-he end of each longitudinal 

